var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
const mongoose = require('mongoose')





mongoose.connect('mongodb://localhost/demo', {
    useUnifiedTopology: true,
    useNewUrlParser: true
  })
  .then(() => console.log('数据库连接成功'))
  .catch(err => console.log(err + '数据库连接失败'))




var app = express();

app.use((req, res, next) => {
  
 
  res.header('Access-Control-Allow-Origin', '*');
  
  res.header('Access-Control-Allow-Methods', 'get,post,delete,put');
  
  res.header('Access-Control-Allow-Credentials', true);
  next();
});




// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({
  extended: false
}));
app.use(cookieParser())
// app.use(express.static(path.join(__dirname, 'public')));
app.use(express.static(path.join(__dirname, 'views')));


var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
var goodsRouter = require('./routes/goods');
var cartsRouter = require('./routes/cart');
var addressRouter = require('./routes/address.js')
var ordersRouter = require('./routes/orders.js')

app.use('/', indexRouter);
app.use('/users', usersRouter);
app.use('/goods', goodsRouter);
app.use('/carts', cartsRouter);
app.use('/address', addressRouter);
app.use('/orders', ordersRouter);

// catch 404 and forward to error handler
app.use(function (req, res, next) {
  next(createError(404));
});

// error handler
app.use(function (err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;